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Application of the optically stimulated luminescence (OSL) technique in space dosimetry |
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| Authors: | E.G. Yukihara G.O. Sawakuchi S. Guduru S.W.S. McKeever R. Gaza E.R. Benton N. Yasuda Y. Uchihori H. Kitamura |
| Affiliation: | aRadiation Dosimetry Laboratory, Department of Physics, Oklahoma State University, 145 Physical Sciences II, Stillwater, OK 74078, USA bSpace Radiation Analysis Group, NASA Johnson Space Center, Houston TX 77058-3696, USA cEril Research, Inc., Stillwater, OK 74074-1541, USA dNational Institute of Radiological Sciences, Chiba 263-8555, Japan |
| Abstract: | This paper reviews the state of the optically stimulated luminescence (OSL) technique for space dosimetry applications, focusing on the properties of carbon-doped aluminum oxide (Al2O3:C). New data presented include the most complete and recent values for the relative efficiency ηHCP,γ for heavy charged particles as a function of the incident radiation's linear energy transfer (LET), obtained through ground-based experiments at heavy ion accelerators. We also discuss the factors influencing the OSL efficiencies, the LET-dependent properties of Al2O3:C, and the experience gained from past space experiments using Al2O3:C. The characterization of the OSL efficiency values as a function of LET allows the use of the OSL of Al2O3:C in combination with plastic nuclear track detectors for personal dosimetry of astronauts, as proposed by the NCRP Report 142. |
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